offpeak

AT&T

Senior Systems Administrator Engineer (Government)

4807 Stonecroft Blvd, Chantilly, VA

Full-time · $98k–$220k (as posted)

First seen by offpeak October 4, 2026

See your drive time Apply on AT&T's site

AT&T Global Public Sector is a trusted provider of secure, IP enabled, cloud-based, network solutions and professional services to the Federal Government. We are dedicated to recruiting, developing and empowering a diverse, high-performing workforce that is passionate about what they do, committed to our shared values and dedicated to our customers’ mission.

AT&T maintains active contracts and relationships with U.S. Government entities that require secure communications and systems. The operational need to add members to our support staff will continue to enable robust solutions in the IT Service and Support framework. The position supports both the active contracts as well as new contract support requests in facilitation of business capture, operations, and new technology insertion. Close relationship building with the customers ensures operational readiness and compliance.

This hands-on role is ideal for an experienced IT and security professional who will support networking, physical and virtual computing infrastructure, threat detection tools, system monitoring, incident response, and secure technology integration. In this multifaceted position, you will manage systems administration, security operations, compliance activities, and user administration in coordination with ISSOs and ISSMs. Responsibilities include system integration, configuration, deployment, remediation, and ongoing operations. This position is onsite 5 days per week at the posted location(s) only. No relocation assistance is provided.

Description of Job Duties/Responsibilities:

Required Clearance: Top Secret/SCI with polygraph. (#ts/sci) (#polygraph)

Required Qualifications:

Desired Qualifications:

Ready to join our team? Apply today!

Our Senior Security Engineer (Government) earns between $98,100 - $220,000 yearly. Not to mention all the other amazing rewards that working at AT&T offers. Individual starting salary within this range may depend on geography, experience, expertise, and education/training.

Joining our team comes with amazing perks and benefits:

Medical/Dental/Vision coverage

401(k) plan

Tuition reimbursement program

Paid Time Off and Holidays (based on date of hire, at least 23 days of vacation each year and 9 company-designated holidays) *Pro-rated when working less than 40 hrs/wk.

Paid Parental Leave

Paid Caregiver Leave

Additional sick leave beyond what state and local law require may be available but is unprotected · Adoption Reimbursement

Disability Benefits (short term and long term)

Life and Accidental Death Insurance

Supplemental benefit programs: critical illness/accident hospital indemnity/group legal

Employee Assistance Programs (EAP)

Extensive employee wellness programs

Employee discounts up to 50% off on eligible AT&T mobility plans and accessories, AT&T internet (and fiber where available) and AT&T wireline phone

Weekly Hours:

40

Time Type:

Regular

Location:

Chantilly, Virginia

AT&T and its subsidiaries are committed to equal employment opportunity. All hiring, promotion, and other employment decisions remain merit-based and free from discrimination on the basis of race, color, religion, religious creed, national origin, ancestry, age, sex, sexual orientation, gender, gender identity, gender expression, physical disability, mental disability, pregnancy, medical condition, genetic information, marital status, citizenship status, military status, veteran status, or any other characteristic protected by federal, state, or local laws. In addition, AT&T will provide reasonable accommodations to qualified individuals with disabilities. AT&T is a fair chance employer and does not initiate a background check until an offer is made. Click here to learn more or request an application accommodation here.

More jobs within a 30-minute drive of Arlington, VA